COMPOSITE PATTERNING DEVICE AND METHOD FOR REMOVING ELEMENTS FROM HOST SUBSTRATE BY ESTABLISHING CONFORMAL CONTACT BETWEEN DEVICE AND A CONTACT SURFACE
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United States of America Patent
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Issued Date -
Jun 23, 2011
app pub date -
Dec 14, 2010
filing date -
Dec 18, 2009
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Abandoned
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Abstract
A composite patterning device includes a stiff first layer having a Young's modulus in a first range, a flexible second layer having a Young's modulus in a second range, a fluidic layer interposed between the first and second layers and having a Young's modulus in a variable range, and a relief pattern in the second layer. The device can be used for establishing conformal contact between the relief pattern in the second layer and a contact surface of a host substrate with attached elements. Then, a magnetic field is applied to the device so as to increase the Young's modulus of the fluidic layer to be similar to that of second layer after which a force is applied to the contact surface so as to release and remove the elements from the host substrate by withdrawing the device.
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